JPS6145612Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to the invention of a power feeding part for an antenna, which is easy to assemble, can ensure accurate watertightness after connecting the power feeding cable, and can maintain a stable packing and storage state of the antenna. This allows it to be made more compact.

In an antenna, it is necessary to form a power feeding part and connect the power feeding cable to it, and when connecting this power feeding cable, a rubber material is used to prevent rainwater from entering the power feeding part from the connecting part. A waterproof sleeve of this type is placed between the power supply cable and an insertion port formed protruding from the power supply section. However, inserting such a waterproof sleeve requires considerable effort in the past, and the waterproof sleeve, which has strong elasticity to ensure sufficient waterproofing, is normally sufficiently smaller than the outer diameter of the power supply insertion port. Since the sleeve has an inner diameter, it is difficult to forcibly expand the diameter of such a waterproof sleeve and insert it into the relatively small insertion opening, which is difficult to work with. Furthermore, this type of antenna is stored in a cardboard box or the like before being transported to a sales point or installation site, but it is common for the antenna to be disassembled before being stored in such a cardboard box. In this simply disassembled product, each part moves within the box, so it is necessary to fix it with packing material, etc. Also, it is not easy to assemble a completely disassembled product at the installation site, and bolts and nuts are not easily assembled. Since it is made up of many parts, it often falls off and gets lost, and it is also difficult to assemble. Furthermore, if the main parts are assembled in a predetermined position and the antenna element etc. are folded and stored in a state close to parallel to the arm, the folded state will not be stable, and the folded state will be rather bulky. Naturally, the storage box must be large.

The present invention was devised after repeated studies in view of the above-mentioned circumstances, and to explain the specific embodiment of this invention as shown in the attached drawings, the overall structure of the antenna using the power feeding section according to the present invention is as follows. The relationship is as shown in FIG. 1, and it is well known that a plurality of antenna elements 3 are disposed on an arm 21 that is provided horizontally and perpendicular to the main rod 20. The arm 21 is also equipped with a power supply section 10 having U-shaped rods 4 opposed to each other in a part thereof. Such a power supply section 10 includes a main body 1 and a lid body 2.
As shown in Fig. 2 and below, its specific structure is
6 to 6, cross sections of each part are shown in FIG. 7 and FIGS. 9 and 10, and the feeder insertion opening portion is shown in an enlarged perspective view in FIG. 8.

That is, the main body 1 is integrally formed with fitting portions 11 for the arms 21 on the bottom surface at the center positions of both ends as shown in FIG. 6, and these fitting portions 11,
An arm 21 is attached to the center portion at an intermediate position of 11.
As shown in FIG. 4, an engaging protrusion 12 is integrally provided to be inserted into the engaging hole 21a drilled in the engaging hole 21a.
As shown in FIGS. 3, 4, and 7, the fitting portions 11, 11 and the engaging protrusion 12 are provided with an appropriate bulge on the inner surface of the main body 1 to appropriately receive the arm 21. However, a cut portion 12a is formed on the distal end side of the engaging protrusion 12 to impart appropriate elasticity, and an engaging step 12b is formed on the outer surface of this distal end side protruding from the fitting portions 11, 11. As shown in FIG. 4, when the lower engagement hole 21a is inserted, the engagement stage 12b is engaged with the edge of the lower engagement hole 21a to prevent removal. Such body 1
A power feeder insertion portion 18 is opened on both sides of the engaging projection 12, and a recessed receiving groove 19 is provided around the circumference of the insertion portion 18, as shown in FIGS. 7 and 8, for insertion. It is well known that an elastic cylinder made of rubber or the like is attached to the portion 18 as a sleeve material to provide a watertight seal. However, the one based on the present invention is the fourth one.
As shown in FIG. 7 or especially FIG. 8, the insertion portion 18 is projected from the bottom surface of the main body 1 to an appropriate height.
As shown in FIG. 8, the ends of the
As shown in FIG. 8, the intermediate portion between the two is a low recessed portion 18b that serves as an arm abutting seat, and forms a series of undulating curves.

In the case shown in the figure, it is known that U-shaped rods 4, 4 are attached to both sides of the power feeding section main body 1 as shown in FIG. As shown in FIGS. 3 to 5, insertion holes 14, 14, 14, and 14 are provided in portions corresponding to the corners on both sides of the main body 1, respectively, for mounting 4 and 4, respectively, in a slightly protruding state. And,
In each of these insertion holes 14, a hole is formed in the main body 1 up to the vicinity of the above-mentioned protrusion for receiving the arm so that the base end of the U-shaped rod can be inserted and fixed fairly deeply. This is shown in Figures 2-4 and 7.
As shown in the figure, furthermore, such a receiving hole 14
As shown in FIGS. 3 to 5, a bearing part 15 is integrally formed in a downward U-shape on one side at a position slightly above the forming part. An engaging portion 16 is provided protruding from the side, and a release operation portion 17 further protrudes outward from the intermediate portion of the engaging portion 16 and is integrally formed. This disengagement operation part 17 is provided by a relatively thin connecting part 17a projecting from the middle of the engaging part 16, and in the engaging part 16, engaging stages 16a are provided oppositely on both sides of the connecting part 17a. are the 3rd and 4th
As shown in the figure, the engaging portion 1 is integrally molded as a synthetic resin molded body rising from the base portion 16b.
The upper part of 6 and the operating portion 17 have appropriate elasticity.

Lid body 2 covered on the top surface of main body 1 as described above
A receiving groove 28 is provided on the circumferential side of the cover so as to receive the projecting edge 1t on the first circumferential side of the main body in a tight-fitting manner. As shown, a shaft portion 27 shown in FIG. 7 is integrally formed with each support portion 22 whose both ends protrude from the lid body 2, and the shaft portion 27 is attached to the bearing portion 15 of the main body 1 described above. It is fixedly supported by a bearing. Also, on the other side of the lid 2 pivotally mounted in this manner, there is a lock portion 23 having a rectangular opening 24 as shown in FIG.
The opening 24 is provided with locking steps on both sides thereof, and a cut 26 (see FIG. 2) is formed from below between the locking steps to facilitate the release operation as described above. The portion 17 is received in the notch 26 in the closed state of the lid body as shown in FIG. 2, and each engagement stage 16a is engaged with the locking stage 25. .

To explain the operation of using the device according to the present invention as described above, the feeder line 6 is inserted through the insertion portion 18 as described above, and its core wire and shield wire are connected to internally disposed members, and the feeder line 6 is A waterproof sleeve 7 made of rubber is attached to the
It is known that the upper end of the waterproof sleeve 7 is covered with the open end of the insertion portion 18 as shown in FIG. Pull out the upper end of the sleeve 7 to both sides and open the opening end protrusion 18a, 1 of the insertion part 18.
8a, and since this covering simply extends the open end of the waterproof sleeve 7 to both sides, it can be relatively easily covered between the protrusions 18a, 18a. After covering the open end of the waterproof sleeve 7 in this way, the lower end of the waterproof sleeve 7 and the power supply line 6 are held together and the insertion portion 18 is firmly held.
As shown in FIG. 7, when the waterproof sleeve 7 is pushed in, both sides of the protrusion 18a are inclined and reach the recessed part 18a, so the end of the waterproof sleeve 7 covered with the protrusion 18a is tilted as shown in FIG. The opening is automatically expanded to receive the recessed part 18b, and it simply encloses a series of open ends from the protruding part 18a to the recessed part 18b, and has a small inner diameter. Even with a waterproof sleeve, it can be easily inserted without the need for unreasonable diameter expansion.
Furthermore, the upper end of the sleeve can be accurately inserted and tightly fitted into the receiving groove 19 on the circumferential side of the insertion portion 18.

Further, the above-mentioned fitting attachment of the power supply unit of the present invention to the arm 21 can be achieved by inserting and fitting the arm 21 into the fitting parts 11, 11 and the engaging protrusion 12 described above, and Therefore, it is clear that a stable attachment to the arm 21 can be achieved without the need for any special screws or mounting hardware. If it is possible to simply rotate the arm 21 in a predetermined position when storing it in a cardboard box or the like during the process of transporting the arm 21 to the fitting portions 11, 11 as shown in FIG. From the attached state, the main body 1 is attached at least to the fitting parts 11, 11.
Pull it out just enough to escape from the arm 21.
The main body 1 is rotated 90 degrees around the engaging protrusion 12, and then the arm 21 is properly press-fitted (using the engaging protrusion 12 as a guide). The circumferential surface thereof is received in the recessed portion 18b at each open end of the insertion portions 18, 18, and is engaged as shown in FIG. That is, in the state shown in FIG. 6, the long side of the main body 1 is positioned along the length direction of the arm 21, but it is preferable that the main body 1 is engaged with the engaging protrusion 12. Also, the peripheral surface of the arm 21 is received in the recess 18b as described above, and both sides thereof are held by the protrusions 18a, 18a. If the lid is attached to the power feeding part setting position of the arm 21 by the engaging protrusion 12 as described above, even if the power feeding part is removed from the storage box at the installation site, there will be no mistake in the mounting position of the power feeding part to the arm 21. By simply turning 90 degrees and pushing in, the state of stable and accurate attachment to the engaging portion 11 can be changed. Furthermore, the fact that the main body 1 is in a substantially stable relationship with the arm 21 during storage as described above prevents it from falling apart in the storage box, and the packing material for storing the power supply unit in a state where it does not move is used. There is no special need for such things. Of course, the arm 21 is received between the fitting parts 11 and 11 as shown in FIG.
The package that is hooked to the open end and joined to the recessed part 18b can be made more compact than the insertion part that simply protrudes. Also, if the power feeding part is not in the center position with respect to the arm 21, a similar packing appearance can be obtained by inserting it into another hole near the center, but when assembling, move it to a predetermined position and insert it in the same manner as above. be able to.

According to the present invention as explained above, when attaching the power feeding section to the arm 21, it is possible to easily perform accurate and stable attachment without requiring any special screws or attachment fittings. It is clear that it is a product, and it also provides a stable connection with the arm and easily forms a relatively compact packing form.
Furthermore, it is possible to extremely simplify the operation of covering the insertion opening of the waterproof sleeve when inserting the feeder line, and these factors together make handling of this type of antenna extremely easy and advantageous. Therefore, it is a highly effective idea in practical terms.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a perspective view of the entire antenna equipped with the power feeding section of the present invention, FIG. 2 is a perspective view of the feeding section of the present invention, and FIG. A plan view, FIG. 4 is a front view, FIG. 5 is a bottom view, FIG. 6 is a side view, FIG. 7 is a cross-sectional view taken along the line in FIG. 3, and FIG. 8 is its insertion. FIG. 9 is a sectional view taken along the line in FIG. 3, and FIG. 10 is a partial enlarged slope view of the section.
It is a cross-sectional view along the line. In these drawings, 1 is the main body, 2 is the lid body, 3 is the antenna element, 4 is the U-shaped rod, 6 is the feeder line, 7 is the waterproof sleeve, 10 is the feeder part, 11 is the fitting part, and 12 is the engaging part. Protrusion, 18 is power feeder insertion part, 18
a is a protrusion at the open end, 18b is a recessed portion serving as an arm abutting seat, 19 is a receiving groove, and 21
indicates an arm, and 21a indicates an engagement hole thereof.

Claims (1)

[Scope of utility model registration request] In a power feeding unit main body which has the necessary members arranged therein and has a power feeder insertion opening capable of covering a waterproof sleeve, an engagement hole provided in an arm at the center of the bottom surface of the power feeding unit main body is provided. The above-mentioned power supply line is provided with a protruding protrusion for insertion, a fitting part that fits with the arm is provided oppositely around the protruding part, and extends in a direction intersecting the axial direction of the fitting parts. 1. A power feeding part for an antenna, characterized in that an insertion part is disposed in a protruding manner, and a recessed part serving as an arm abutting seat is formed at an open end of the insertion part.